<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>课件合并</title>
</head>
<body>
<div id="app">
    <div style="margin: auto;">
        <div style="border: 1px solid #ccc; float: left; margin-right: 20px;">
            <video ref="documentPreview" width="900" height="600" autoplay></video>
        </div>
        <div>
            <video ref="videoPreview" width="300" height="250" autoplay></video>
        </div>
    </div>
</div>
<script src="../vue.3.2.js"></script>
<script src="main.js"></script>
</body>
</html>